详文请见：中国石油大学学报（自然科学版），2003，27（2）：19-22

准噶尔盆地陆梁地区油气运移方向研究

陈中红等

　　对准噶尔盆地陆梁地区油气运移方向的研究结果表明,陆梁油田的油气可能来源于盆1 井西凹陷和玛湖凹陷。进一步对两者油气可能运移路径的构造形态和运移通道条件进行了分析,认为盆1 井西凹陷的油气运移路径为一继承性的斜坡,深部的逆断裂和不整合面、中部的正断层及浅部的大套砂砾岩体可作为油气运移通道,其油气运移条件较玛湖凹陷有利。在此基础上,利用生物标志化合物w (甾烷C29ααα20 S ) / w (20 S + 20 R) 和w (C29ββ) /w (ββ+αα) 、烷烃碳同位素δ13C 和原油碳同位素δ13C、原油物性等指标在油气二次运移过程中发生的运移效应并结合流体势进行分析认为,陆梁地区主要的油气运移方向为西南东北向。证实了盆1 井西凹陷是该区主要的生油凹陷。

关键词:准噶尔盆地;陆梁地区;油气运移;二次运移;运移方向

 

HYDROCARBON MIGRATION DIRECTION INLULIANGSECTIONOF JUNGGAR BASIN

CHEN Zhonghong et al

Journal of the university of petroleum, 2003，27（2）：19-22

The contrast of hydrocarbon source and the evolving structure history of Luliang region of Junggar basin indicated that the hydrocarbon mainly came from the western depression of Peng-1 well and Mahu depression. For Peng-1 Well , the migration conditions were more favorable than Mahu depression ,and the hydrocarbon migration paths were succeeding slopes. The thrust fault and unconformity surface in the deep formation, the normal fault in the middle and the grit at the bottom of Cretaceous system created the good conditions for hydrocarbon migration. Analysis on the migration effect using some parameters including geochromatography of biomarkers sterane w (C29ααα20 S ) / w (20 S + 20 R) and w (C29ββ) / w (ββ+αα) , alkyl hydrocarbon carbon isotope δ13C and crude oil isotopeδ¹³C , and physical property of crude oil also validated that the dist ribution of fluid potential field revealed the following conclusion. The secondary migration direction of main hydrocarbon in Luliang section was from southwest to northeast , which shows that Peng-1 well was the main oil depression , though Mahu depression could provide some hydrocarbon in earlier time.

Key words : Junggar basin ; Luliang section ; hydrocarbon migration ; hydrocarbon secondary migration ; migration direction

转载本文请联系原作者获取授权，同时请注明本文来自陈中红科学网博客。
链接地址：https://m.sciencenet.cn/blog-46337-215009.html

上一篇：自然伽玛与沉积盆地古环境反演(地球物理学报)
下一篇：复式油气成藏系统(地质科学)